Definition

Noun: 1. A small, distinct structure or particle found inside a cell: A "cellular inclusion" is a general term for any small, non-living body or aggregate of material located within the cytoplasm of a cell. These are often products of the cell's metabolism or accumulated substances and are characteristic of certain physiological states or diseases.

Usage

• The term "cellular inclusion" is used in cell biology and pathology to describe diverse intracellular structures that are not considered permanent, functional organelles like mitochondria or the nucleus.
• It is a broad, descriptive category. In scientific writing, the specific type of inclusion (e.g., lipid droplet, pigment granule, viral inclusion body) is usually named.

Examples

• Under the microscope, the pathologist observed cellular inclusions in the liver cells, indicating a storage disorder.
• The presence of specific cellular inclusions can be a diagnostic feature for certain viral infections.
• Researchers studied the protein aggregates that form cellular inclusions in neurodegenerative diseases.

Advanced Usage

• Inclusion bodies: This is a common and more specific term often used interchangeably with "cellular inclusions," particularly when referring to aggregates of viruses or misfolded proteins within a cell.
  • The virus causes the formation of characteristic inclusion bodies in the host cell's nucleus.

Variants and Related Words

• Inclusion body (n): A specific type of cellular inclusion, often used in virology and neurology.
• Cytoplasmic inclusion (n): A synonym emphasizing the inclusion's location in the cell's cytoplasm.

Synonyms

• Intracellular inclusion
• Cytoplasmic body
• Inclusion body

Notes on Different Meanings

• In materials science, an "inclusion" refers to a foreign material trapped within a solid, such as in a metal or gemstone. The term "cellular inclusion" is specific to biology and refers to structures within biological cells.

Noun

1. any small intracellular body found within another (characteristic of certain diseases)
   • an inclusion in the cytoplasm of the cell